EUEANTIATE POLYCHAETA OF JAPAN. iD 



the tinturior is a Jittlc larger, arc placed just anterior to tlie great- 

 est width of prostoniiuin, and separated by a wide median inter- 

 space. Fi'ontal tubercle wart-like, shorter than the prostomium, 

 and broader dorsally and strongly compressed ventrally. Median 

 tentacle has a total length of about Lj the length of tlie prosto- 

 mium, an<l its ceratophore occupies J or more of the whole length. 

 Paired subtentacles, more than 4 J- times the length of the prosto- 

 mium, are provided with, hair-like sensory papillae, which are seen 

 only I)y a great magnification. 



Dorsal pair of tentacular cirri, 2 J times shortt^r than the 

 })aired subtentacles, and the ventral pair, a little shorter than the 

 dorsal. 



Lateral bundles of setae have metalic iridescence ; and the 

 large dorsal setae (fig. 1) are soft, and dark brown colour at the 

 luise, and light yellowish at the tip, with bronz iridescence. 



Of tlie three groups of ventral setae (figs. 2, 3), the dorsal 

 grou}) contains 2, the middle 3 — 6, and the ventral 8 — 13 setae. 



Ventral cirri are not at all in equal length, and that of the 

 second parapodiated segment is a little longer than the followings. 

 Dorsal cirri, arising from strongly dilated base, are very long, be- 

 ing 2i times longer than the ventral ramus of the parapodium. 



Ihd)itat : — Off Misaki in Prov. Sagami, 56 fathoms (!) ; Bay of 

 Auiiiori (!) ; vSagami Bay 153 fathoms ("Albatross"); Suruga Bay 

 ■\~) l'a (horns (" An)atross ") ; Marenzellor's specimens were collected 

 by Dr. A. Koiietz, in south Japan. 



A2>hvo<lita anstralis Baird. 



PI. IX, figs. 4—0. 



18(î5. Apliroditii austrjilis, Ijainl. Joiun. Piau. Soc. Pondoii, \'ul. VII f, 

 p. 17*1. 



